628.1
D68
DESIGN OF A WATER WORKS SYSTEM
AND ELEVATED STEEL TANK
FBANKL].IN\ INDIANA
A., A. DITTMAR A.. VV. EATON, Jr.
S. L ZIMMERMAN G. J. MEYER
Armour Institute of Teebnolog'y
d 9 08
Illinois Institute
of Technology
tnsnrvERSJTY libraries
AT 110
Dittraar, A. A.
Design of a water works
system and elevated steel
For Us3 !n Ubr:?/ Only
— DESIC-IT OP A— •
7/ATER WOBKS SYSTEM A^JD ELEVATED STEEL TAIIK
FOR
PRAHKLIi:r, IMDiAfTA.
A THESIS PRESENTED
EY
CL^ . c3-<^5~^
TO THE
PRESIDEITT AIID PACUL^IY"
OP
ARMOUR IHSTITUTE OP TECHITOLOGY
POR THE DEGREE OP
EACHEIiOR OP SCIENCE l¥ CIVIL ENGIHEERIITG
HAVIFG COICPLETED THE PRESCRIEIB COURSE
IN
^^^fYmJl
CIVIL EFGIEEERIFG.
CHICAGO, ILL.
19 0 8.
ILLINOIS IMSTfTUTF OP TErHNOLOGV^^^"^^^-^^ ^^
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35 WEST 33RD ST' :EET ^/ ^ * ^If'''^^:^^^^^^^^ ' /-
CHICAGO, IL 60616 .#6^t^ ^?%^ C^^£^l^^^z^\^it^
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1.
The Design of a complete Water Works System for Franklin, Ind.
The method of procedure in the design of this water
works system may he outlined as follows:
Pirct,- the field work, followed "by the drawing of a con-
tour map and profiles of all the streets on which pipe lines
are to be laid.
Second,- the location of the pumping station, and site for
elevated tank.
Third,- the distributing system.
Fourth,- the design of the elevated tank, including a thor-
ough theoretical analysis of the stresses a,nd various members
of the tower.
Fifth,- specifications and estimates of quantities.
Under the field work comes the determinations of the
elevation of street intersections, the width of the streets,
and the length of blocks. A plat of the town was then drawn
showing the elevation of street intersections. With the in-
formation on hand and the slope between street intersections
being constant, a contour map was drawn, followed by a set
of profiles on which the pipe line is shown at the required
depth below the surface.
The pipe line as shown on the profiles follows the nat-
ural contour of the surface at a depth of five feet which in
this vicinity is deep enough to protect it against ^reezing.
Following this comes the design of the pipe systeir,.
The supply was figured on the basis of the number of 50 foot
lots within the city limits, taking, five persons to a lot.
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There being 2000 fifty ft. lots, puts the total population
at (2000 X 5):=. 10,000. The population at present is about
4000, so that this a,llov/s for a twenty year increase.
Under the design of the tank comes the design of the
tank proper and the design of the tower.
The next step is the writing of specifications. These
specify the material with reference to quantity and quality,
and workmanship mecessary for the satisfactory completion
of the various parts of the system. The last step consists
of an estimate of the quantities required for this system.
DESIGN OP DISTPJEUTBIG SYSTEM A^JD PIPE LIKE.
Allowing 100 gallons per capita comsuTDtion for an es-
timated population of 10,000, gives the total required dones-
tic supply of 1,000,'::'00 gallons every 24 hours.
The number of fire streams that are in use simultaneous-
13'' are determined by:
Euichling's Pormula
Y = 2,^^
Y=r number of streams X= population is thousands.
This gives a total of nine fire streams furnishing 250 gallons
per minute, or 2250 gallons. Allowing for a maximum play
of four hoses, gives the quantity of water required for fire
purposes, as 540,000 gallons, for 24 hours.
Therefore the total demand on the system will be
1,000,000 gallons per day.
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The next step is to divide the town into districts so
as to get the percentage of water required for each section.
The boundaries of the districts are as follows:
District (l^
Graham Turnpike to Adans Street, east on Adams Street,
to Young Street, north on Young Street to Hamilton Avenue,
7/est on Hamilton Avenue to Graham Turnpike.
District (2)
South on Main Street to Wayne Street, west on V/ayne
Street to Morton Street, north on Morton Street to Harriott
Street, and east on Harriott Street to Main Street.
District (3)
South on Main Street to Wayne Street, east on Wayne
Street to Porsyth Street, north on Porsyth Street to Adajas
Street, west on Adams Street to Main Street.
By assuming five persons to eveiv fifty foot fronts.ge,
we find that, district (l) cons.mes 31/^. District (2) con-
siomes 34°t. District (3) consumes 35/b of the daily consumption,
while the maximum nuraher of fire streams must he considered
concentrated in one district simultaneously.
To determine the maxiqjum number of gallons required per
minute, consider the maximum house consumption as twice the
average, or 1,000,000 gallons per day (24 hours) as acting
over a space of time of 12 hours.
Assume nine fire streams supplying 250 gallons per minute
to act through a space of time of four hours.
Therefore
Domestic - 1,000,000 gallons/ 12 hours =1390 gals. per minute
Pi re r: 9 2 25O " /min. =:2250 « » n
3640 ~ " " "
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Therefore the main leading from the elevated tarik will have to
he capable of delivering 3640 gallons per minute.
The main leading from the pumping station to the elevated
tank will have t: deliver the 1,000,000 gallons in t^relve
hours for domestic consiunptionand 540,000 gallons in tv;elve
hours for fire service. Although the latter supply is used
in four hours under maximum conditions the time of refilling
the tank may extend over a period of t\'Telre hours.
Therefore
'Fire 540,000 gal/l2 hours 750 gal. per minute
Domestic 1,000,000 " /l2 hours 1590 " " "
2140 •• " «
The next step is to det-^rmine the maximum niimher of
gallons which may be needed in any of the three sections.
This is shown in the following table:
% Dome st i c Fire ^otal_
Section (l) 31 433 225*0 2681
»• (2) 34 473 " 2723
" (3) 35 485 » 2736
Total 1390
SAE^iPLS COUPUTATIO^T.
Ey carefully exatnining the map you ivill find the max-
imum conditions will prevail in District (3) v;hen there is a
fire in the vicinity of Greenburg State Road and Porsyth Street,
This being a residence district, we will assume that one third
the total nujaber of fire streams are all that must be concen-
trated at one point, which amounts to three streams.
By an advantageous placing of the hydrants we can con-
centrate three streams at any one point without exceeding 200
feet of hose.
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are all that need to be concentrated at one point, which
amounts to three streams,
Ey an advantageous placing of the hydrants we can con-
centrate three streams at any one point without exceeding
200 feet of hose.
A minimum hydrant pressure of 25 pounds per sq. in. is
is required to mantain a 250 gallon stream with 200 feet of
hose.
Assuming the average head on the tank to he 180 feet,
and adding to this the difference of elevation between the
tank and the point in question which is 20 feet gives a total
head of 200 feet. Using 5 feet per second as the maociraum
velocity we start from the extremity of the line and work
back to the tank.
Section 1.
Hougham St. Jefferson St. to Greenburg Rd,
Domestic Supply
132 - 50 ft. lots. Population 132 X 5—760
100 gallons per capita 760 X 100=76000 gallons per 12 hrs.
^105 gallons per minute*
Pi re Supply.
3 X 250 gallons =750 gallons per minute.
Totals 750 -hl05 r::835 gallons per minute.
Section 2.
Jefferson St. Hougham St. to Hurricane St.
Domestic Supply
160 - 50 ft. lots Population - 150 X 5 800
100 gallons per capita 800 X 100=:80,000 gallons per 12 hrs.
=^111 gallons per minute.
Fire Supply
"3 X 250 = 750 gallons per minute.
Total— 750+105+- 111^ 966 gallons per minute.
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Section 5 .^
Hurricane St. Jefferson St. to Adams St.
Domestic Supply
128 50 lots Population 128 X 5=540
100 gallons per capita 640 X 100=64,000 gallons per 12 hrs.
89 gallons per minute.
Pi re Supply
3 X 250=750 gallons per minute.
Total = 750/^05-^9 =1055 gallons per minute.
Section 4.
Adaias St. Hurricane St. to Main St.
Domestic Supply
224 - 50 lots lom'lation 224 X 5^120
100 gallons per capita 1120 XIOq « 112,000 gallons per 12 hrs.
-155 gallons per minute.
Pi re Supply
3 X 250=750 gallons per minute.
Total 75OM05-M11^9/-155 — 1210 gallons per minute.
Ey the use of the diagram for calculating cast iron pipe
given in"Turneaure and Russell" the following tahle was com-
piled. *
Section Discharge Dia. of pipe Length Loss of head Loss of
"^ ■ ■ ' " Gal./ min. in inches TrTTeet / 1O(50TT.' hd^T^f t.
1 855 10 320 4.5 5,9
2 966 10 1200 7.5 9
3 1055 10 1000 8.0 8
4 1210 12 1760 4.5 7.9
Total loss of head30.8"
The available head at the h^'drant 200-30-170 feet
P-.434 h
P:r.434 X 170=74 pounds per square inch.
A glance at the map will show the system employed in the
distribution. A large 15 inch main leading from the tank which
branches into three 12 inch mains which supply the three main
districts. These main trunk lines are all connected so as not to
leave a.ny dead ends, and in "between these are placed the smaller
pipes forming what is known as the " Gude ron System."
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7,
PRAIvlKLllT VJAT3R WORKS.
General Specif ictions and Conditions of Agreement.
The work will be considered and detailed specifications
are drawn under the following divisions:
l-Purnishing cast iron pipe and special castings.
2 -Furnishing hydrants, valves and valve -boxes.
3-Laying pipe and setting liydrants, valves and valve-boxes.
4-Pumishing and setting up pumping machinery.
5 -Furnishing material for, and erecting water tank and tower.
Bidders will divide their bids, giving prices for the work
under the separate divisions mentioned above, together with a
lump bid for the construction of the complete plant.
It is intended that these specifications, and each contrac/"
and specifications shall cover the completion of the work to
which it relates.
.Py the term city is meant the city of Franklin, Indiana,
acting through its proper authorities.
"Wherever the term "^ater ?7orks Committee" is used, it
shall be understood to mean the committee representing the
the Common Council in the prosecution of the work to be per-
formed under and in accordance with these specifications.
Wherever the term "Engineer" is used, it shall be under-
stood to refer to the Engineer, in the emplo3'' of the city,
having direct charge of the water works construction, and to
his authorized assistants.
Wherever the word "Contracter" is used, it shall be under-
stood to refer to the party or parties contracting to perform
the work to be done under these general specif icatios, or the
legal representative of such party or parties.
Bids will not be received for the work involved under
these specifications, except from parties having had experience
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8.
in such work, and who can furnish satisfactory froof of their
ability to carry to carry on the construction of the v/hole
or pa.tf of the system in a thorough and workmanlike manner.
The contractor is to furnish, at his cost and expense,
all transportation, plants, tools, labor, materials, and all
else requisite to execute and complete the work in the best
possible and most expeditious manner, and according to the
drawings and specifications and their intended meaning.
He shall employ competent foremen and experienced mechan-
ics and laborers, and shall discharge immediately, whenever
requested by the Engineer to do so, a.vy man who is incompetent
or disposed to be disorderly, and shall not again employ such
such person on the work.
All materials furnished and work done will be inspected
by the Engineer, and if not in accordance with these specifi-
cations and contract, they will be rejected and immediately
removed, and other work done and material furnished in accord-
ance therewith. If the contractor refuses to remove the work
the work and materials as above ordered, then the Engineer
and water Works Committee shall have the right and authority
to stop the contractor and his v/ork at once, and to supply man
and materials at the cost and expense of the contractor; such
expense to be deducted from any moneys then due, or to become
due the contractor from the city.
And it is further intended that inspection shall not re-
lieve the contractor from his responsibility to do true and
accurate work; and the contractor shall furnish all necessary
■^aelli+les, shouldit be deemed advisable to make any examination
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of the work alreadj'' coapleted. If any be found defective in
any respect, he shall defray the expenses of such examinations
and of satisfactory reconstruction. If all be found satisfactory
such expense, v/ill be paid by the city. The engineer and WateK
Works Coramittee shall the right to reject, at a.ny time previous
to the final settlement with the contractor any work or mater-
ials may be found faulty, even though such faults rnay have been
previously overlooked.
The successful bidder must sign the contract for the work
to be done by him, within 10 (ten) days after the contract is
awarded to him, and must begin work at the time fixed for him to
begin, in accordance with the detailed specifications for the
several portions of the work. He shall proceed with the work,
prosecuting it with due diligence from day to day, and complete
it at the time fixed.
The contractor must follow strictly and without delay,
all instructions and orders given by the Engineer in the per-
formance of his work. In the event of the contractor's ab-
sence from the work, he must leave it in charge of a duly au-
thorized representative, to whom orders and instructi' ns may
be given, If he fails to do this, then the contracto r will
be held responsible for the proper carrying out of such orders
and instructions as it may be necessary for the Engineer to
give to any superintendent, foreman or other employe about the
work.
. ,,. The contractor will be held responsible for the entire
work until completed and accepted by the city, and until he
is formally released from his obligations. He is required
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not to a.ssign or sub-let his contract without perriiission from
the city, "but must keep it in his name and control until com-
pleted and accepted, and in case of bis alfsence from the v/ork,
must have a dulj'' qualified person to take care of it.
No charge shall be made by the contractor for any delays
or hindrance from a.ny cause during the progress of any por-
tion of the work embraced in his contract.
If the delay be caused by any act or neglect of the city,
then he will be entitled to a-n extension of the time allowed
for the completion of the work, sufficient to compensate for
the delay, provided the contractor shall give the city imme-
diate notice of the cause in writing. If the contractor
fails to complete the work at the date specified, he shall
forfeit to the city, as confeeeed the liquidated damages, and
amounts named in each of the specifications for the different
portions of the vifork.
Before the work will be considered as completed, all
rubbish and unused material due to, or connected with the
construction, must be removed and the premises left in a con-
dition satisfactory to the city. All sidew^ks and cross-
walks must be cleared up streets, curbs, crosswalks, fences
and other publie and private property disturbed or damaged
must be restored to their former condition, and final payment
will be withheld until such work is finished.
Should any disagreement or difference arise as to the true
meaning of the drawings or specifications at any point, or
concerning the character of the v/ork, the decision of the
Engineer shall be final and conclusive, and binding on all
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11.
parties to the contract.
The city reserves the right to increase or decrease the
quantity of vrork, or any part thereof, to the amount found
necessarj''. No allowance will "be made, in case of increase,
for any sum above the rate of price "bid, nor in case of de-
crease for any real or supposed daiiiage or loss of profit oc-
casioned hy such diminution. The time fixed for the comple-
tion of the work will he proportionately increased or dimin-
ished.
During unsuitable weather all work raust stop when such
v/ork v.'ould he liable to be in.iured, and it must be suitably
protected from such possible injury.
¥o extra work will be paid for or allowed, unless the
same is done upon the written order of the Engineer. Sub-
ject to this condition, extra v.'ork will be paid for according
to the schedule of prices bid. 'Where prices for the v/ork are
not included in the schedule, ten per cent advance upon the
actual cost, as determined by the Engineer, will be paid to
the contractor. All claims for extra work must be made in
writing before the pajTnent of the next succeeding estimate
after the work shall have been performed. Any failure on the
part of the contractor to make such claim, will be a forfeit
of the same,
' All city, county or state laws, ordinances or regulations
limiting or controlling the action or operation of those en-
gaged upon the work, or affecting the ma.terials applied to
them, must be respected or attended to.
The contractor will be required in his contract to pre-
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serve the city from all claims for dainages, from any and all
causes and nature whatsoever, in connection with his work or
any part thereof, and also to act as defendent in each and
everj- suit of any ard erery nature 7/hich may he brought against
the city by reason thereof, or connected with the work done un-
der this i^^fS contract.
Unless otherv/ise provided for in the details of specifi-
cations, the Engineer during the last week of each month, will
make an approximate "^of the value of the work done during that
month, a,nd the contractor will "be paid the amount due under
his contract, on the fifteenth (15) of the month following.
A final estimate of all work done and materials furnished
according to the contract and these specifications, will be
made as soon after the Engineer has been notified of the com-
pletion of the woi-k, as he can satisfy himself by tests,
examinations or otherv/ise, that the work has been and is finally
and fully completed in accordance with the contract and specifi-
cations, and the contractor will be paid as hereinafter pro-
vided. Pefore such final payment will be made, the contractor
must satisfy the city that all bills for labor and materials
used in the work have been paid.
The contractor v/ill be furnished with one set of drawings
prints, or tracings, and a set of specifications, giving all
the details and dimensions necessary for carrying out his
portion the work. Dimensions given in figures will have the
preference over the scale where there is any discrepancy.
If the bidder does not fully understand the plans and
specifications, or in doubt as to the Engineer k.. ideas or
ari;
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15.
intentions, concerning any part or portion of the work,fye
must satisfy himself by inquiry of the Engineer, before bid-
ding, for he will be held rigidly to the Engineer's intei-pret-
ation of the plans after the contract is dr&vm. The plans and
specifications are intended as complete, but should anything
be omitted from them which is necessary to complete the work
in accordance with the apparent intention of the Engineer,
it will be supplied by the contractor, and at no extra cost to
the city. Any work done by the contractor which is strictly
extra work, will be settled for as above stated.
All materials, lines, grades, must be in full accordance
with the plans, and no deviation from the plans and specifi-
cations will be allowed, except by written authority of the
Engineer and Water Works Comnxittee.
The copy of plans and specifications furnished the con-
tractor must be kept constantly at the work, jb v/ell cared
for and returned to the Engineer when the work is completed.
The Engineer must stake out all the v/ork and set all
necessary- grade -stakes; and the contractor is required to pre-
serve all stakes bench-iaarks etc., set or established along the
line of the work, until authorized to remove them. If moved by
carelessness or without authority, they will be set if needed,
at the expense of the contractor. ,
The city will furnish the contractor with all the stone
for the construction of rubble masonrj.', and will also furnish
broken stone for concrete etc.
Each bid must be accompanied with a certified check or
its equivalent, as a guarantee that the bidder will enter into
a contract v;ith the city to do the v/ork according to the plans
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and specifications, and for the amount of the bid. The amount
of such check shall be fire-hundred dollars (.f.SOO).
This deposit will be retained and placed to the credit of
the party whose bid is accepted, and will be forfeited if he
fails to enter into and execute the contract awarded to him.
In case the failure of the bidder, to whom the contract
is awarded, to sign the contract, the city reserves the right
to accept any other bid made, and all chechs will be held until
contract is signed, when they will be returned.
As security for the proper performance of the work, a
bond acceptable to the city of an amount up to one -fourth
the amount of the contract, will be required, and the city will
pay at the times specified only eighty (30) per cent of the
monthly estimates of work properly performed and materials
derlirered, afterdeducting all charges against the contractor
retaining the twenty (20) per cent until the completion of the
contract and the final acceptance of the work.
Proposals must be enclosed in sealed envelopes, and each
must have written on it pla.inly, the words, "Proposal for Water
Works". Each proposal must be addressed to the Secretary of the
Water V'orks Committee of tHe city of Franklin, Indiana.
!To proposal will be received after the limiting time
fixed for receiving proposals, and no bidder will be allowed
to withdraw his bid afterit has been opened and and read, unless
the city fails to accept the bids for the v^fork, within fifteen
(15) days from the opening of the bids.
Ml work done must be in strict accordance v;ith the detail
,:;; .vr. .£,-;: ■; srf I.Clw 3-J:aoQ:&Ij ::..tx{T
..u 0^ oc:>i;r' noo oui o:t-yr>ex3 Ln£ otrci ■i3jTf3 o;! alis'i
.•_.,,:. t.:; .(, .; >-■ ^ab£ri\ bicf "9x{-:'o vns .rqaooja 0*
. J -i., .;-. •(.fjrfc.S' nerf-7 ,,ben:^,i:a fix ^t:>?'': - • -
'-'-■■-' ..-: . ,. ,....> srii" o;t 3lcf;;5oq:iOOS br.'-^d
.: Lllv ^:?::srijnr^ <■-■-■- ' - - -"omB ei:.j
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■ '■ ■■ ■■■■rr (on) 'i^oni^v;* er'T :inxni£.!'r''!
... , 3oloni ecf d-2^i.- -..,:,,._;„■-.
:0£r5 fj:::r or b-^ ■..;:, '1 •;".-; e>:1 t'unix I^aoqotq x{o^-S »":,
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ynxneqo arfd" ffiO'i'T avjsb (51)
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15,
specifications under their appropriate headirigs, and the general
and detail specifications will be attached to and made a part
of each contract. The general specifications and conditions of
agreement are to he considered a part of the detailed spec-
ifications for each part of the v.'ork.
The fina,l payment will he made v/ithin sixty (6 0 ) days
after the formal acceptance of the -work, by the Engineer and
the city. Partial payments ma,de upon the estimates, either
monthly or otherwise, shall not be construed as a final or
partial acceptance of anj'- portion of the "/ork, or as reliev-
ing the contractor in any way, from the responsibility herein
contemplated.
The right is reserved to reject any and all bids.
DETAILED SPEC IFI CAT lOHS
EOR
PURITISHIHG CAST IPOM PIPE
AM)
SPECIAL CASTINGS.
The pipe shall be of the kind usually known as "Hub and
Spigot" , and in general each straight pipe shall be about
twelve (12') in length from the bottom of the hub to the end
of the spigot. The metal shall be of the best quality for
the purpose, made from what is commercially known as "Neutral"
Pig-iron, which shall have been ma,de from iron-ores without
the admixture of cinder, and v:hen cast into the pipe the metal
shall be tough, and of such density and texture as will per-
mit its being easily cut and drilled by hand.
■ .iLs.\'.' n't eriT
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aw " a.s rtwc-nii -y-u.
Ol't XiJ-^ii'^ '■ : .t ''£1} -i
'; j-;r^7 p:o*il ?r).-n ,snoq'';;q sri,.:
6xit o:^:;.L rr^:^-j v:'isf:'. 'd'l:^ ,'ti'',.;j.c '.
16.
The city shall have the right to appoint an inspector
whose duty it shall he to see that these specifications are
strictly complied with; to reject any meta,!, raold or cast,
which vrould, in his judgment cause imperfection in the vrork;
to supervise the coating, testing and v;eighing of pipes and
castings; to require at any time, specimen rods of the metal
for testing, to reject after casting, any pipe or special
casting which he may deem "below the requisite standard of per-
fection, and his decision and directions shall "be respected
and o"bserved hy the contractor.
Any palpa"ble defect or imperfection, which may have es-
caped the notice of the inspector, shall be deemed sufficient
cause for rejecting any pipe or casting at any time previous
to the final settlement and the completion of the contract.
The pipe-metal must possess a minimum tensile strength
of at least eighteen thousand ( 13000 ) pounds per square inch.
All the straight pipes shall be cast in dry sand moulds,
vertically, with the hub down. Every pipe is to have the
initials of the maJrer's name cast distinctly upon it, and also
the year, the class letter, and a number signifying the order
of its casting, in poi it of date; the several different
classes of pipe each to have its ovm series of numbering;
the figures and letters to be at least two inches in length,
with a proportionate v/idth; the \7eight of each pipe to be
conspicuously painted on the outside, before delivery, with
white lead paint at the contractor's expense.
.Ml special castings shall^. be subjected to the same ex-
aminations and tests at the foundry, except the watar-pressure
:.;■:.-, -.-,• ^ .,..;:;■ , ; -oqpx 9u;::.no c^n3ryj^&A;t cjln' ■■si: ,.oiuoM' .ffoirf
' ';.o r^riiia-i^"' -:-;iJ'S;.:r ,sni,t->oo c^xlj 9i.;XYi9qua ot
• .■.-■.; 3i>'. •■■•' '' 'n3 noislosft airi Ln.M tiioi-iiyo'i
-■ . . -qjri TO ^cs'lfll- f)l(U:,qL-:q vn/.
■. •' ■•"'' ' :'«"i'osq3/"ii sdj" l"o so id on ©rfd' I)Oo-.so
- -■:■■-■■,: -^0 e^Iq Wi' ^n.:j-ooty: •'■^" -'^
.jOjTxtuo:. ... ■■'■ ■■;.■•: inecv3li^o^ I.^ri'.
■. ;~r. 3iianS':) -.. ., J'axjro: Ia.'^3ut-dc[i:q ©i{T
. . . . " '"n :?sqi;q ^:^.plB-Li^ ani" XIA
^.J^ j>n.(5 jJi nor- ^ffi e/fv "ro c .^ ' -i- i •; i:
; .iwgi'^- ;■ RTi;;^.. .
' .;■ 'on-.,.'fvoo .'..'d' ctx; *nirq LBeX sJ"i:ifv
©(■fell- :^S Rii^ol J-n.,S snQX:i:p}-:b.r
17.
test, as the straight pipe, and shall be marked in a similar
manner. The Engineer may reject without proving, any pipe
or casting which is not in confonnity with these specifica-
tions.
Pipes and special castings shall not be taken frora the
pit and stripped while shoeing any color of heat, "but shall
he left in the flasks for a sufficient length of time to pre-
vent unequal cooling and contraction by subsequent exposure.
On being removed from the flasks, all pipes and special
castings shall be subjected to a careful examination and ham-
mer test for the purpose of detecting imperfections of any
kind. They shall then be thorouglilj dressed and made clear
and free from earth, sand or dust, which adheres to the iron
in the moulds; iron v/ire brushes must be used, as well as
softer brushes to re.-nove the loose dust. jTo acid shall be
used in cleaning the castings. After having been properly
dressed a,nd cleaned, the^r shall again be subjected to a thor-
ough inspection and ha-:mer test. The contractor will be re-
quired at the 'foundry, to place all castings in such positions
as may be deemed necessary by the Engineer for convenience
of inspection.
The pipes and special castings shall be free frora scoria
sand-holes, air-bubbles and other defects or imperfections;
they shall be truly cylindrical in the bore, straight in the
axis of the straight pipes, and true to the required curvature
or form in the ajcis of the other pipes; the:;- shall be inter-
nally, of the full specified diameters, and shall have their
inner and outer surface concentric.
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18.
To insure proper diameter of sockets and spigots, a
circular iron templet of the required dimensions shall he
passed to the hotton of every socket, and a circular ring over
every spigot. Care shall also he taken to avoid all excess in
diameter of the sockets. .¥o pipes or special castings will he
accepted which are defective in joint room, whether in conse-
quence of eccentricity of form or otherwise. "So lump or rough
places shall he left in the barrels or sockets, and no plugging
or filling will he allowed, .Ml pipes and special castings ^rith
defective huhs or flanges will he rejected.
After the ahove described cleaning and inspection, every
and special casting shall he heated, in a suitable oven, to a
temperature of about 320 P., and while at this temperature, be
immersed in a bath of hot coal tar pitch varnish, prePared in
general, according to Dr. P.. ^mgus Smith's process. Speci^-l
care shall be taken to have the surface of all pipe and castings
entirely clean and free from rust immediately before putting
them in said bath. If any pipe or casting can not be dipped in
said bath soon after its removal from the mould, it shall at
once be thoroughly coated, with pure linseed oil, in order to
prevent the formation of any rust before applying said varnish.
The coating must be durable, smooth, glossy, hard tough,
perfectly waterfroof , and not affected by any salts or acids
found in the soil, free from bubbles and blisters, strongly
adhesive to the iron under all circumstances, and with no ten-
dency to become soft enough to flov/ v,;hen to the sun in sujunier,
or to become so brittle as to scale off in the winter.
After the said coating has become thoroughly set and hard.
■<(! '[
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19.
every pipe shall "be subjected to a proof by '/rater pressure of
three hundred (300) pounds per square inch. Each pipe while
under the required pressure, shall he sharply rapped with a
hand hammer, to ascertain whether any defects have been over-
looked; and pipes which may exhibit any defects by leaking,
sweating or otheri/ise, shall be rejected.
All pipes and castings must be delivered in all respects,
sound and in conformity with these specifications. Upon their
deliver^'- at the point designated, the Water Works Committee
reserves the right to subject any pipe or casting to to the same
water ^foof and hamjner tests as are specified to be applied at
foundry; , or which may have been broken in transportation, will
be rejected ^hen discovered, unless the same may be cut as
hereinafter provided. Car? must also be taken in handling the
pipes and castings during transportation from the foundry to
said point or any time after being coated. If, upon its arrival
at the designated point of delivery, the spigot end of any
of any straight pipe should be found cracked or broken, during
transportation from the foundry to the said point or otherwise,
such defective portion shall be cut off at the contractorfe ex-
pense, provided that the same does exceed a length of four (4)
feet. A. deduction from the proper original weight of such pipe,
shall also be made in each case, at the rate specified in the
table of weight, for ever^/ inch of length so cut off. No pipe
or special castings in which the hub is found to be cracked
or defective in any respect, will be accepted at said point of
deliver:/ or otherwise; nor will a.ny special casting with a
defective spigot end be received, or permitted to be cut off,
without the written order of the Engineer.
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20.
Pipe arriving with the weight or number illegible or o-
mitted, will not be received, but will be subject to the same
conditions as cracked or broken pipe, so far as they apply.
All tools^men^ materials^ required by the Engineer or the
inspector in discharging their duties relative to the inspect-
ion at the foundry or otherjvise, contearplated by these specifi-
cations, shall be furnished by the contractor, and at no es^^en-
se to the City,
SPECIFICATIONS
for
PUmTlSHlITG HYDPuW^TTS , VALVES
VALVE -BOXES.
There will required for the sj^stem, the following valves,
the number being closely approximated only:
Two (2) ten (lO) inch gate valves,
Fourteen (14) six (6) inch gate valves.
Two (2) four(4) inch gate valves.
The valves will be of the best quality made and of a design
to be approved by the Engineer; they will be of the kind known
as double-gate , double-hub, brass mounted. Bidders will state
in their proposal what manufacture of gates they propose to
furnish.
They must be what are termed "heavy" and must be tested
successfully and remain watertight, under a pressure of three
hundred (300) pounds per square inch at the facto rj'.
The contractor will be required to guarantee their perfect
condition for a period of six months (5) from the final accept-
ance of the work, and to pay all expenses and damages which
may be incurred in keeping them in perfect order for that lenglh.
-c
01': a~& {?.} ova'
■ ot
oJ- hni'. ,i:ioi^7 orii lo son;
21.
of time.
The valves will be made to open "by turning the key to the
left. They must be suitablaly coated.
The net area of v;ater-v7ay must not be less than the net
area of the pipe of the saxae nominal disimeter, and in all
particulars the valves must be of the best form and make, and
proportioned for strength, durability and ease of working.
Defective valves will not be accepted, but will be stored,
subject to the contractor's order and at his expense and risk.
The right is reserved to vary the number, kinds and sizes
to such extent as may be necessary for the interest of the work.
Proposals must state the price per piece for each size,
for use in case of increase or diminution in the quantities.
HYDRA3TTS .
The hydrants must be of the very best quality made, and
may be either the Mathews, Ludlow, "^aterous. Chapman, Galvin,
or other equally good make, acceptable to the Engineer. Bidders
will state in their proposals what manufacture of hydrants
they v/ish to furnish. They must be made of the best materials,
such as will be durable and will insure perfect ease of motion
for erery moving part.
Bidders will specify the size of valve or gate opening
and inside opening of stand pipe,
Bidders will subxait prices for hydrants, with and without
frost cases.
The character of the design must be such that all parts
are easily accessible, and that repairs may be made at a min-
imum cost an'-i In a very short time.
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22.
The drip must be such as will drain the hydrant perfectly,
leading no ^ater standing in the stand pipe ahove the connect-
ing pipe; such as will operate positively and certainlj; so
des gned as to render it impossible to becorae clogi^ed with any-
thing liable to get into the water mains, or by roots; and
such as will not easily get out of order or be difficult to
repair.
The hydrants will be of proper length to use where the
botton of the pipe-trench is to be five (5) feet and six (6)
inches below the surface grade. They will be designed to open
to the left.
The nozzles will be cut with a thread to match the coup-
lings now in use in the fire department of the city. The gate
valve must be so designed as to operate easily and freely and
not be liable to be clogged or stuck by small pieces of foreign
matter, and must be made of or faced with a material which is
durable and not easily injured, which will not be liable to
stick to its seat, and such that should any slight injury occur
to the seat or gate face, the valve will not leak.
Prices will be submitted per piece for the following.
Pive (5^ hydrants with six (o) inch bottom connections,
three (3) two and one-half (2-l/2) inch nozzles. Twenty-seven
jr27) hydrants with four (4) inch bottor connections, two (2),
two and one -half (2 1/2) inch nozzles. i:.ength of stand pipe
mentioned above. AJ.1 bottom connections to be standard bell
Ind.
Defective hjMrants will not be accepted, but will be stor-
ed at the contractor's risk and expense and held subject to
his order.
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25.
He will be required to guarantee the perfect working of
hydrants for a period of six (5) months from the date of the
final settlement, and paj^ all expenses and damages which may
be incurred in keeping them in perfect working order for that
length of time.
.411 hydrants must be tested and stand satisfactorily, a
pressure of three hundred 300 pounds per square inch at the
factory.
VALVES EOXES.
There will be required, twent;;--one (2l) cast iron, extension
valve-boxes with five (o) inch diameter upright shaft, to be
acceptable to the Engineer, for the valves above specified.
Prices must be named per piece for the valve-boxes to
fit the valves mentioned in "the foregoing list, set in mains
laid in trenches varying in depth from four (4) feet six(6)
inches to six (5) feet.
All valves after being set, must stand satisfactorily,
the test specified for the mains after being laid, viz: a pres-
sure of one-hundred and fifty (150 ) pounds per square inch,
as shown by a correct guage to be attached to a hydrant or hy-
drants, in the city, at points to be designated by the Enginee^
and for such a length of time as the Engineer may desire, in
order to satisfy himself of the perfections of the work.
The hydrant will be tested with the hydrant valve or
gi e closed., also with the nozzle caps on and the gate or
valve open, and each and every defect must be repaired, and
at no expense to the city.
b<,r
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■ , 'Tsr";:; Criiitc. ^L-^o-ir\£>tb 'Ions. (£■ evil fi:^ rx ..;e:;r:o^f~oTl.'^:v
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.24.
The successful bidder must begin the delivery of the hydrants,
valve-boxes and valves June 1, 1908.
The proposal for furnishing hydrants, valves and valves-
boxes, shall state the time for the full delivery of the materials
under this specification. Other things equal, preference will
be given to the proposal offering the earliest delivery.
The contractor will be required to forfeit as confessed
and liquidated damages, to the city, the sum of fifteen(15)
dollars per day for each and every day the final delivery
is dela,yed beyond the time specified in his proposal, and he
will be required to reimburse said city for B.ny and all daimages
and increased cost of work to the city, by reason of such delay
and act as defendent in any and all suits, which may be brought
which may be brought against the city by reason of such delay,
or from any other cause connected with his or their contract
with the city.
The contractor or contractors will be required to contract
to preserve and protect the city from all claims of infringe-
in the use of patented articles, and to defend any and all
infringement suits brought the city, growing out of, or due
to the use of their hydrants, valves and valve-boxes.
Drawings or models should accompany each bid.
During the last week of each -lonth, the Engineer will
make an estimate of the amount of work done under the speifi-
cation during that month. On the fifteenth (15) of the suc-
ceeding month, the contractor will be paid eighty (30) per
cent of the amount due him on this estimate. The balance,
twenty (20) per cent will be due and payable within sixty days
(60) days of the final completion and test and approval by the
'OxJa -iiol •;.-:? -i: , \^b
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25.
Engineer, and acceptance by the '^ater "-^orks Goramittee.
The right is resorved to reject any and all bids,
ai:7-ii^!j.^-t
25 -A
SPECIJICATI03IS for PIPE LAYING,
and
SETTING HYDPJ^ITS, VALVES and VALVE POXES.
The following is an approximate estimate of the total
length of each pipe to be laid.
Siz e . Peet. ^ _ ^__
re' Yncne s . 1000. ^ ^^
12 inches. 4600.
10 inches. 16200
8 inches. 14900,
6 inches. 13200.
54900
The work under these specifications vidll include the
setting of all necessary special castings in the pipe system
throughout the city. Also the setting of fire hydrants as
specified "below.
Also the setting of the following gate -valves with
valve boxes.
Two (2) Ten (lO) inch gate=valves.
Pourtgen (14) Six (5) inch gate -valves.
Three (3) Twelve (12) inch gate -valves.
The above quantities must be considered only closely
approximate, and the right is reserved to modify them as may
be found necessary in the progress of the work, without extra
compensation to the contractor other than due to the rate of
charge for such kind of work.
The contractor will furnish all labor, niaterials and all
plant necessary to lay the pipe in accordance with these speci-
fications, and in a thoroughly first class and workmanlike
.tr'.rje.
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25--E.
EILL OF QUAJITITIES.
The following is an approximate estimate of cast-iron
pipe and special castings, required for the construction of
a water supply system for the city of Pranilin, Indiana, in
accordance with the annexed plans and specifications.
The sises given, refer to the internal dia.Tieters.
The Tieight of straight pipe shall he as follo'srs:
Size Feet Weight per foot Total -veight.
16
in.
1000
12
in.
4600
10
in.
16200
5
in.
14900
6
in.
18200
123. 5
128500
84
386400
64.6
1,046520
47.8
712220
33.0
600600
Any pipe ^;;'eighing less than the atove ty more than three
(3) percent may he rejected, and no allowances or payments
will he made for any excess greater than tv;o (2) percent alcove
these weights. These requirements shall be determined lij
the Y/eight of each pipe sepa.rately. All pipes shall he of
such length as to closely approximate tv/elve (12) feet from
face to face of hell vvhen laid in the ground, and the weight
per foot shall include the weight of the hell or huh.
The city shall have the right to, and may at any time pre-
vious to the shipment of the pipes and special castings,
change and revise these specifications as to sizes and amounts,
as may he required hy the needs of the v>/ork, without change
in the contract rate of pa.yment.
Contractors in making their bids, will specif^'" the prices
per net ton of tv^ro thousand (2000 ) pounds, for v/hlch they will
deliver each of the different sises named, as per these spec-
ifications. Also the price per pound for special castings
made in the ordinary manner, and where necessary, aconrriino'
f .•■••■,
idl
..o:ijs£>-:o::;
.^bJif'
rixq doy .■ . ) ' -^
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^ ■ lo noct i'Jii i::-,;
25^- K^.^
to the Engineer's dravrings. Detailed drawings of each size
of pipe to "be used in the vfork should accompany each hid.
The contractor must begin the delivery of the pipes and
special castings on or hefore a.nd the deliver^'
must continue regularly and uniformly, and in the order of
sizes as required.
The special castings must "be delivered in ample time for
use with the pipe with v/hich they belong, and any extra ex=
pense incurred by the city hy failure to deliver them in time,
must be borne by the contractor.
The proposal for the cast-iron pipe and special castings
shall state the time for the complete deliver;;,' of the quc.nti-
ties named in this specification. Other things equal, pref-
erence v;ill be given to the proposal offering the earliest
deliverj^.
The contractor will be required to forfeit, as confessed
and liquidated damages, to the city, the sum of fifteen dol-
lars (.HilS.OO) per day, for each and every day the final de-
livery is delayed beyond the time specified in his proposal,
and he i^ill be required to reimburse said city for any 8.nd all
damages and increased costs of the work to the city by reason
of such dela;^"", and to act as defendant in any and all suits
which may be brought against the city by reason of such delay,
or from any other cause connected with his or their contract
with the city.
During the last vreek of such month, the Engineer will
make an estimate of the amount of the several pipes laid in
the trenches during that month. On the fifteenth (15th) of
the succeeding month, the contractor will be paid eighty (80)
f f 0
4 .-. ,- ^, r - f-
ors-xod
iJ" bns:
25 --p..
percent of the amount due him on this estimate. The balance
(20 percent) will be due and payahle within sixty (60) days
of final completion and test ajid approva.1 by the Engineer,
and acceptance by the Water Works Goininittee.
The right is reserved to reject any and all bids.
LIST OF SPECI/'X CASTIITGS.
There v/ill be required the following approximate quanti-
ties of special castings:
Crosses Tees Plugs F.educers :?ends
1, 8x10 8, 6x6 5, 6 in. 1, 6x8 1, 5in, Easy
1, 10x12x16 9, 6x10 1, 10 in. 5, C in. Easy
1 , 6x6xl0xlQ 9 , 6x3
2, 6x10x8x10 2, 8x10
2, 8x12
4, 8x10
1, 8x6
I'O
26.
Asiy blov;-off air cocks, or other connections necessary
to render the work copiplete v/ill he set hy the contractor at
points to be designated by the Engineer.
The work v;ill be done along such lines and streets as are
indicated on the pipe distribution raap of said v/ater works
system, and in such other places and streets in said city as
may be directed by the city.
The contractor must begin work on or before }?lct^ / /9a S^
and he must prosecute the v/ork diligently and rapidly from
day to day and must complete the work within the time speci-
fied in his proposal. During each of the months of the time
allowed for this work, a proportiona.te part of the work must
be completed. The trenches for the pipes shall be opened
under the direction of, and in accordance v:ith the grides and
lines to be given by the Engineer, and of such depth that the
bottom of the trench shall be five feet and six inches below
the grade of the street. Along the same street, the pipe
lines will be laid u.iiformly the same distance from the street
center, in straight lines and on straight uniform grades be-
tween adjacent hydrants.
Any increase in depth beyond that v;hich is necessary to
lay the pipes, in this manner, if ordered by the city, will
be paid for per cubic j'^ard of earth excavated and back-filled,
provided such extra depth averages three (3) inches for the
whole length of extra cut. A corresponding reduction -ivill
be made for all lengths of less depth than that specified,
and no attention v/ill be paid to any average less than three
noo '('."•r'.-i^'o "to ^aj-rooo "iir, ■]:?;.o-".voIfr vnA
. - Bdi ',// ,bGi.on>5XEe>fj sc' ot ij.^iixog
'.'..; 0 s.;u ii ■ . ':!• -jo'i cjerfoiio'xj' or'T . b.- oi
.jjsiiclln:! bx.-f urf IJIi:- .;:5i5Xl
■•■■'■ :lr!:3X.;vo3 -10 .'ju-^ aanxl ^:[-;\i:-:'tihi i.t ,i^:ta30
:■ ■'■■■■'"> ■ 'io blJ^'Y 0X0'''O -iiSq • ■ ^rf
.-' &J:,':a so .L'lxv; iioix/iyc-'.to'a tui JbnjB
27.
(3) inches.
The greatest care must he exercised to insure puhlic safe-
ty v/hile the trenches are open, and until all cause of danger
appertaining to the v/ork, is removed, hy fencing, shoring,
watching, lights, etc., a.nd the contractor will he held li-
ahle for all damages due to neglect of these precautions.
The pipe v;ill he laid in the order directed hy the En-
gineer; and the storage of pipes and other materials on the
streets, 3.nd the laying, must he so a-rranged as to cause the
least possible interference with the public, and vrith the
street, side walk and crossings.
In soft ground, each pipe must be laid on three (3)
blocks 2in,x2 ft, three for each pipe, laid equal distances
apart ,
Valves and hydrants, special castings, s.nd all other ap-
purtenances are to be placed at the places, and in the manner
designated by the Engineer, specified herein and shown ty the
plans .
Any omission of branches, stop-cocks or other appur /enances
intended to be laid, shall be corrected v;hen required, by re-
opening the trench, if it has been filled up, and introducing
what may have been omitted, and without extra charge upon the
part of the contractor.
In hard ground, the bed of the pipe must be even, true
and uniform, so that the pipe will bear equally upon it for
the whole of its length, a,nd this result must be reached,
either by carefully bottoming out the trenches, or by packing
in and tamping solidly, sufficient earth to bring it to the
,H:.',:'r<x \
.3n:ij:vr,^r.air .o ;|-oeIs':;if ot eub ao^:^- rr.uL' IXs tol sifffi
<^,j-; ,:;\rv^ \,,,.-- . ;;. ■■ ti7 tonsil sit ^Itix ^^Jlfxaaoq" :rs/^sl
.., ; :■ Tijj?! aqiq iii>£S ,bn ■« nl
,-i-:oo acf XXfids ,.&1j-:3X ;rcf o.'?- jQ.mirJni
.'^o^o.-zi^noo jj{u "to i-t;^q
28.
proper grade. Sufficiently large holes shall he dug, to
leave the bell of each pipe free, and not resting on the
ground at any point.
At the time of laying, the hells and spigots shall he tru""
ly adjusted so as to give an uniform lead space all round, and
the depth of lead must not be less than tvio (2) inches, but
must be more if necessan', in order to completely fill the
rabbet in the hub or bell end of the pipe.
The lead must be of the best quality, pure and soft and
must be caulked securely and properly into place.
The gasket must be of clean hemp yarn or oakum, twisted
and rammed tightly into place. Eefore making the joint
the bell and spigot must be v^iped clean and dry, e.nd the joint
run at one pouring. The caulking must be faithfully execut-
ed, 8.nd the lead driven flush with the face of the v/ork, or
until it will efet no further.
The pipes are to be sv/ept clean and free from dirt and
rubbish before laying, a.nd each time of stopping v7ork the end
of the pipe line must be carefully plugged and closed to ex-
clude animals, dirt and water.
All streets and sidewalks, crossings, public or private
grounds, shall be restored to their former and original con-
dition, the same as before the v/ork was commenced, and in ev"
ery way satisfa.ctory to the Engineer.
Great care must be taken not to remove without the con-
sent of the proper parties, any gas pipes, water pipes, sewers,
drains or cisterns, or their appurtenances, and they must be
carefully shored up, supported and protected, and the pipe
1 in:., :i.r; »vi:jj o ' •■;
ms
29.
laid in such a way as not to harm them. After passing the
above with the pipe, the earth must be verj- carefully compact-
ed about them. Any damage done to any of the above, or any
other public or private property, must be made good by the
contractor.
If any boulders be encountered in the trench, they must
be taken out and moved off the streets or sunk so that the
tops will not be less than one foot below the bottom of the
pipe. No stone larger than one man can lift, will be put
back in the trench.
Whenever necessary to cross under, or in anj' manner in-
terfere with a railroad, due notice shall be given to the su-
perintendent of the same, and the crossing must not be made
ejEcept with his approval as to time and manner.
In back-filling the trenches, the earth must be carefully
rammed under and around the pipe up to its center. The rest
of the trench may then be filled by depositing the earth in
layers not to exceed six inches in thickness and ramming each
layer thoroughly. l^o boulders will be allowed in back-fil-
ling, within two feet of the top of the pipe.
In opening the trenches, the surface of the street, if of
good gravel or macadam, shall be carefully removed and depos-
ited by itself on one side of the trench, a.nd in back-filling,
the surface of the street must be returned to its original
condition. Any extra material necessary for this purpose,
must be provided by the contractor at his own expense.
All unused or defective material, rubbish, etc., incident
to the v/ork must be removed at once, and the street kept clean.
XX.tw ccioo
.t io?cf
:.3 1
5 Jinx I
50,
All pieces of pipe not shorter than three (3) feet must be
used at once in the line; that which cannot be used must be
removed at once to a place designated by the Engineer.
Whenever these requirements , or any portion of them, are
unheeded or neglected, the Engineer vdll give the contractor
due notice to that effect, and if the rubbish, etc., is not
removed, or the needed repairs made, the Engineer shall have
the power to employ men to do such work at the expense of the
contractor, and these expenses m3.y be deducted from any moneys
due him from the city,
Before being accepted, the pipes will be tested to a
pressure of one hundred and fifty (150) pounds per squareinch,
as shown by a correct gauge attached to any hydrant to be des-
ignated by the Engineer, Any breaks, leaks, faults or de-
fects in the pipes, or the work, must be made good and re-
paired by the contractor, at his own expense. Such tests
shall be continued until the Engineer is satisfied that there
is no leak or defective part in the whole system. The expense
of this test (except the pa3'' of those in the employ of the
city) will be borne by the contractor.
The contractor must leave the work in perfect order,
and it must stand any pressure, up to one hundred and fifty
(150) pounds per square inch, to which the Engineer may wish
to test it, and must conform in evary other particular to the
specifications, both general and detail, so far as they apply.
The contractor shall maintain the pipe system in perfect
order for a period of six months from the time of its final
acceptance by the city, and shall repair at his own expense
J'fOO i/fi?' ;;vx"^: lli'';
. o-
Oi'o tfi bJ''i>;
the.) •••?=: J. :,'::•■ -ti" b -;?':) 9 ertau
lX ifiG ,vO'51;'5:g :t£::o Ov oo
C>~' J.>J 'Oil
.Y.'iXO ^;io iiio-
! jl. tic- ■■■■:
I'-Vv-'O/ri SiJ-i
o;^.i. -o'i.::. sj;
1 1 i: ;; '^j « :r o .t
.0 6iiJ ';.
51.
all breaks, leaks and faults which in the work, by reason of
faulty material or faulty workmanship, and shall pay all dam-
ages resulting therefrom. During this time, he shall ma'ntain
the surface of the streets, in their original undisturbed con-
dition.
Pipe laid, will be measured from center to center of
special castings on cross-lines, or from center of special
casting to end of line, and from center to center of hydrants.
Where specials are inserted and plugged, measurements v/ill
be made to the end of the the line.
HYDRAJn'S.
All hydrants will be carefully examined by the Contractor,
to see that they are in perfect working order and free from
rubbish, dirt, stones, etc., before setting them, and when de-
fects ej:ist, he must call the Engineer's attention to the Pact,
The trench to receive the hydrants will, in clay, open,
porous, sandy or gravelly soil, be excavated of sufficient
size, and at least one-quarter of a yard of course gravel or
broken stone shall be laid beneath and around the hydrants,
up to a point one foot from the drip: Then the earth shall be
tamped securely to the surface. In sandy or gravelly ground,
enough broken stone shall be placed about the drip, to keep it
free from clogging.
The foot of the hi'-drant shall be securely braced behind,
to prevent injury to the bottom joint, and care must be taken
to set the hydrants truly vertical. Each hydrant shall be set
arid' rrt riOxT-.v baa ri:ri«;-.' , ;-oli3')-t
vr ;;.jMyO ori- "^aoriSO :7livt"i h'-'i-sa.e.9IS st Ili;'" ,I;..»:;J' oqi'l
»9b . . /I/'
I:.xw ;•:.:
1 o'l,-;
,3QnoJ
.:fc;i.ri
;'. JoUTf
J.:
{ ■ •■• - -^ '-
...to el
■;^-)"I oJ-
.cfO:!
01^ O:'
":■
rrsrvi. \
C-' --i.^ t
: ■.■.JO:-'.. ■,:■... ..iiioq .Q oc^ qn
;> a.trtBib't:-
52.
truly at grade and v/ill stand upon a flat stone or piece of
plank, 2in. x 12in. x 12in.
Setting Valves.
The contractor will examine all valves carefully, and all
found defective must be rejected. Care will "be taken to see
that all the dome and packing-gland nuts are set up tight and
properly.
All valves -will "be set uniformly with reference to pro-
perty or curb lines, as directed bj'- the Engineer, and no var-
iations greater than one-foot from the uniform location, will
be permitted.
Proposals will be submitted in the following forms for the
work as specified above:
Price per lineal foot, foi* laying fourVJt) inch pipe,
•••»•• n .1 ti Six(6y inch pipe.
» » n « n H eight (8) inch pipe.
" " »» nun ten(io) inch pipe.
The prices must include the setting of all hydrants,
valves, valves-boxes, etc.
The proposals for laying cast iron pipe, special castings,
etc., shall state the time for the full completion of the work,
as per this specification. Other things being equal, preference
will be given to the proposal offering the earliest completion
of the v;ork.
The contractor will be required to forfeit, as confessed
and liquidated damages, to the city, the sum of fifteen dollars
($15) per day, for each and every day the final delivery and
erection is delayed beyond the time specified in his proposal,
and he will be required to reimburse said city for any and all
•if!.'-.!;''
Clxfi 'i 0 i' 0 .K.'i -t i. i.: 'iJ ariT
n.'-v/-^.:j(7 Lr;.?' rfifo;- t:^:^^ 11.3 :}-;3Xi'^
'.-•• *5:. ''Oft"!!;!.' 3^^ ;^fi\il irrjo '•:o ■C*'^i*'3
, j!-;j.t Jirctaq erf
i ( c ) ^
. 0 :iu.
90 tf
; j; ;7 - t ;;
-bn*
33.
damages and costs of the work to the citj'- hy reason of such
delay, and to act as defendant in any and all suits which may
he hrought against the city by reason of such delay, or from
any other cause connected with his or their contract, with
the city.
During the last week of each month, the Engineer will
make an estimate of the materials furnished and the work
completed under this specification during that month. Eighty
(so) per cent of this amount due the contractor will he paid the
contractor upon the 15th. of the month following. The balance
(20) per cent will be paid within sixty (6O) days of the com-
pletion of the work after test and approval by the Wter Works
Committee.
The right is reserved to reject 3.ny and all bids.
?■ ,-. .-, , -^
J.-W -ic^'^nigi
, ■"n..£""c i Xc'
-t: ;n^
"-S^:^! ■:■:■ 1 TUf^XtiiCI
f);.J-eX
■,rf-- ;> (
^:;a 30 xi..
33 -E
DESia^T OP AN ELEVATED TANK.
The first step in the design of an elevated tank is to
determine upon its capacity.
The second step is to determine the location in order
to get the most economic distribution.
The third step is to determine upon the height of the
tank in order to give a proper head.
After due consideration we decided that the most economic
way of maintaining our water works system would be running the
pumps for twelve hours and shutting down over night. This
method requires larger pumps, "but the extra cost is more than
compensated for, in the decrease of fuel used, and the decrease
in cost of maintainance by nearly fifty per cent.
Taking the daily consumption at 1,000,000 gallons and the
fire supply 546,000 gallons per 4 hours we will get at the
capacity of the tank in the following manner. Assuming that
one-fourth of the total daily consumption is used at night and
adding to this the amount needed for firs service will give us
the capacity of the tank.
1/4 X 1,000,000= 250,000 gallons
540.000 ••
Capacity of tank — 790,000 ••
Inorder to be on the safe side we made the* capacity of the
tank 800,000 gallons.
The success of this system will depend upon having the
tank full when the pumps shut down. This can be accomplished
by the use of 2,000,000 gallon pamps which are capable of del-
ivering 1,000,000 gallons in the twelve hours.
r:.v'lOt^
i.b
■ !.•■ X
o : ' ; — i
010. C-
>.ifi;j
t t
;-iX <jnoII:5r; 'CO,! -00, 1 vni-;-Y,
35 -C
After giving consideration to the elevation and central-
ization ;ve decided to place the tank at the intersection of
Graham Turnpike and Greenwood Turnpike.
The height of the tank T^as calculated by assuming a fire
at a point which is a maximum distance from the tank, and
adding to this the domestic supply all along the line. Prom
this we calculated the loss of head. The required pressure at
hydrants is 75 pounds per square inch which is equivalent to
a head of 172.8 feet; adding to this the loss of head already
found we have the required head at the tank with respect to the
point considered.
The point at which the tank was located is of somewhat
higher elevation than the surrounding country. To fulfill the
required condition we had to support the tank on a tower 140
feet high.
The design of the tank proper is a simple matter. Begin-
ning at the top the thickness of metal required for each five
feet of head may he determined by the use of the formula,
_ 2.6 hd
t- 8000
h-=rthe distance in feet below the top. d ^diameter of pipe
in f^ffiie thickness of the plates used in the bottom of the
hemi -spherical bottom are one-half the thickness of those used
in the lower course of the tank.
The next step is the design of the tower. This turned out
to be a very difficult and complicated piece of work. After
spending a considerable amount of time in reference work we
ii;:lj-j
rriQXBf
, r, . ' ; C-: '":; I jj n o 0 inloq
• jif alii d-09'!;
'■■t-\iim'i:il- iBd-i^sx: "io ;- ■5^:^:10 life?- - ■■ -^•' ■ '"•+ ;t£ sn*n
■ " V•'c■"-=d•
'■ - ■ . f' ^ri;! ........ .... ■ 'i.e/^sifc orf:t-:i.:
...! S'si-.oXq 9.r:i 'i;. ..... oiilj ^.cff^l nx
• rj-if llivri-'-yno S-£ij iac;.+ J"tc'' Ii,^oi-i9riqe-- jtmsjrf
.s/too s< "-.ni: on 9 erg
'■■:t':
•■s*^ .
33 -D
came to the conclusion that authors did not wish to coKEnit
themselves upon such a work, as the designing of the struts
and diagonals contain very complicated stresses. They, however,
all agree upon the saime method for analizing the stresses in
legs. To complicate matters all the more the legs in our
design change their direction at each panel point.
The dead load stress in each leg will be one eight the
weight of the tank when full, and as the legs diverge the
stress will he increased by the secant of the angle \vhich the
leg makes with the vertical.
The method for determining the wind stresses in the legs
is as follows:
Pass a horizontal section through the legs at any point
and the section cut will be as shown in diagram. Considsr the w
wind acting in a direction as
shown by arrow. Pass aline hy\
through the center of the legs
k^3
CD
<^"
Ar-Aoand call this the neutral vyz/A^o n
axi s . '
D^
i>
<?.
Let A= the area of one
post. ^it.
Let p=the unit stress.
Then, as the stress varies directly as the distance out
rn
from the neutral sixis,
p =the unit stress in A^=,7p
ir^total moment about niutral axis.
M=2A.pr^4(p/r X .7r)A;tX.7r — (Aprs- 4X.49rp)A
Apr (2X1. 999) 2Apr
M -2 Apr
M.- Apr
Msr2A pr4 4A^.5pr=2A>pr-y-2\ .or
0- .svel
ic ^> , . •• •■ • •■ ■ "T
taivvollo'i s£ 'ii:
f.^^,! a'l iTO X. I »■: 'fib ii fix :?^Tx>to.c ^-nl./
.^^ J c^ ^''" ^" -•^^■^'^^ '-'
9fl0 'iO .KO't,S i?.C<.' —A .to J
. .. ..\ : sxiw er't r;q *3j
-iqAS .
-.An"--i
33 -E
Aost
M_2A pr M-A pr A.p =stress in Ba^M; A- M
M_ 2A^rr 4 A.^-.7r X .7p
M_A X.p '^.'^r— .'^ K pr o rJL^
8 ~ eT,7r
A.p— stress in post A^gM
Sample calculation:
Calculation of the stress in section H-J of leg and
design of that memmber.
Take moments about a line passed through I-J
Moment of tank 85700 X 139.2 ^11,929,440
Moment of legs 2X4X28X8X50X56 - 5,017,600
l6,94'7 70T?
P— 16 1 947, 040 -. 215,570 pounds wind stress.
Iv-ad load.
Weight of sections (1+2+3 )Sec. 1?*'= 12570
l/8 weight of tank full 883500Sec. l.''^^ 902940
Total dead weightgiSSlO"^
Maximum stress in member 915510 216570 1,132,080
Use 4 — 9/I6" platesCTwo
rireted together.
4Z)2 8" X 8" X 7/8"
Area of plates =54.67
" " angles =^52^92.
Total area =107.59-^-^.
I =^bh5^12=L 13324/12 Xls/lS =1296 X 2=2592
final
I of angles
Total moment of inertia
^ 5276.92
^68.92
r=77868 .92/107 .59 -8.6
P- 12500— 13440/8 .6 -10936 .3
Area =: 1 ,136 ,080/l0936 .3 "107 .2
Required area=107.2
Actual area =107.59
\; ,, ..,^\
'1 ^T b'::
"tfS
55 -F
SAI.CPLS CALCULATION.
Calculation of majcimum diagonal stress in section G,H,I,J
Take moments alDOUt the plane passes through I -J and
dividing this tiy 4r gives the stress acting at the panel point
I;
M-16,947,040 ft. l"bs.
Stress at I 16,947,040 /25.95 X 4 = 165,266 pounds.
Stress in G, E, 129,018
165~'12901£ = o4248 pounds.
Vertical coiponent of stress in ly G;i=34243/2 - 17124 lbs.
•• n » n II G^I^ 92157—17124=75053
Stress at 1=16,947,046/25.95 X 5.6=l116,619 pound;3.
Vertical component of stress in I;^G3 115319 — 75035= 415oo Lhs.
Gglj^-SlSseihs.
I9G;= 41586 Ihs.
C; I^ il536-92157 =: 133743 Ihs .
i;^H 133743 116619 171241133.
J H 163266 lbs.
Maximum diagonal stress r 41586 X Sec. 50* 17'z? 60050
A- 60050/18000 -3.33 sq.in.
Round steel bar 2 l/lo" in diameter.
Sample Calculation.
Calculation of the maximum strut stress along section I-J
The horizontal component of the diagonal stress that goes
into I— Ijj^c--15,600 lbs.
The horizontal component of the leg stress that goes into
I,— l4=63,0001bs.
The horizontal component of the diagonal stress from the
panel below that which goes I— I^:r 0
Resultant component in strut- -79600 lbs.
The horizontal component of tue diagonal stress that goes
into I,-Ijj- -32810 lbs.
The horizontal component of the stress that goes into
I,—I= -30640 lbs.
., i,-{, 0 't(.
■i ■..T'VO'Xl'.
-':'is.i'Ci 'io C!.ciir:S,ioxi^'''
PI05^?ri: ,j: jO f:.i: aa«^tic
MB H ~ ft
? «;■> •»-■( -i'n ■"■•
I! 11
oV
■ -COT!! S.r^:j- TilrrfjIiBO
• 2 !": -
^.-^I-I oirti
:.i;Jx.^...j."::.n onv
55 -G.
The horizontal component of the stress (diagonal stress)
from the panel below that goes into l£— •13 = 11352
Resultant compression in strut: 52810-/- 71320-— 11352
- —115450
The horizontal component of the diagonal stress that
goes into I3 — Ij.- — 32810
The horizontal component of the diagonal stress of the leg
that goes into I3 "— Ii--^6050 Ihs.
The horizontal component of the stress (diagonal) from
the panel point below that goes into Ig— I;j^=28686
Resultant component stress in strut; 52810 + 96050 —
28686=: ~ 128860 lbs.
The horizontal component of the diagonal stress that goes
»
into 1;C~'^~ — 15600
The horizontal component of the leg stress that goes into
l'*-J~ --124810h.bs.
The horizontal component of the diagonal stress from the ,
panel point below th* goes into I^^J" 28686
Resultant component in strut: 16600=124810— 28686
141,410 lbs.
?£aximum stress 141410 lbs.
Use 4 angles 4" X 4" X 7/l6" laced together.
Ares 4 angles = 15.24
I of angle- 4.97
I-I+Ad I:r 4.97 -H 5.51 X 7.84=208.42
41=208.42 X 4 = 355.68 r-^SSS .63/13^24 =7.95
P- 12500 — 7544/7.95-11574
A- 141410/11574 =12.3 sq. in. Actual area;=15.2 sq. in.
:' : -,.I~%I 0.t'.YX SC>03 JBdi WOl
uIBSS — -^r^T -'-' ^I odni asog
.v;;3 I;Sf:. t 'bo >+nsr.oq£ii"oo .C.GoftosiTO.
.aa£ OflOoC-'r^-I ~-^J cJni G0059 iViri*
3S;.-i-ta gi-:} lo d-- ■> Xxi.-tfrosi'TO.ff 9fiT
C'o"l8?: -,,"'-*•• at OufTi 860?^ i&!'i3' W0l5C' T/iXCq Isobct Sffi'
.ecfl OorSSX — "
005 ".I— "l-'T^l od-Ri;
av;s'-iJ-si gel ?/'[* lo cirtr'ncqffioo x^.tf;cn:J:-:ox{ 19;.''.'
»;-'.dX Oli-Xi'-X <;;es*i.re mfjfiriXv'.:Iv'
■>i-.I ■'dl\'^' "!'• ?;:9Xsns ^ Q80"
$>■$[ , tl zr B eX^jm: ■^ atiA
O g > — « r~, r- n "^ n T
• w 1 t -« S J. ^n*3 xO J-
1 Xc;,3 4 ^'v?,^ ~ I "^bAVl—I
V V^-'Ji.--- ':f , — OOflSX -'•
^Cj9L£ ir= /
^C/^JL£ /OOO = /
G/f/IP///MZ. ylA/y^LY^/S OF /tOO/" TRUS.
55--I.
DESIGN 01? ROOP TRUSS.
The roof system consists of eight trusses or sixteen
half trusses.
Roof slopes at an angle of 45*
The round load at an angle of 45*=36 .1" -^sq.ft .
The distance between trusses is = 7.85 ft at bottom.
The dead load on each truss 10.2"/sq.ft.
The covering consists of three rows of circular plates over-
lapping.
The portion of load taken by each truss is that which
acts upon a section of the developed cone.
Span 40« Rise 20'
TAELE OP STRESSES
Members
Stresses
Lengtt
C-*-D
-2200
14.14'
E — P
-1300
14.14'
G— H
-2300
14.14'
I— J
-3150
14.14'
I— A
i- 350
20.00'
A--D
-^3200
22 00'
D— P
-'AOO
14.14'
P--H
-^000
20.00'
H--I
- 400
14.14'
The smallest size angle that will stand a 7/8' rivet is
3x3''x3/8''. Using the maximum stress here given the size
found will fall within this limit.
Therefore 3x3''x3/8" angles are used through.
The center rod is of steel l,l/lo in diameter.
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DESIGN OP FOmroATlON.
Weight of tank 186000
Ti7eight of roof 17000
'?/eight .of bottom 82500
Total ■ 5555'(T(>#
Weight taken hy each leg P.55500 = 31937
8
Weight of each leg s ;?0550
Total dead load on foundation from each leg
= 31937 X 20550= 52490#
Maximum tension in tower section of each leg due to
7;lnd-+ 238280.
Resultant tension = 288280 - 52490= +235,790#
This must be taken by the anchor bolts.
Each leg is anchorad with four anchor bolts
255790 = 58,947 :=. stress taken by each bolt
4
58947 z= 3.27 sq.in. of steel = 2,l/l6" rod.
18000
Use 4 -= 2,l/lo'* rods.
Conc-ste weight 150"/ cu.ft.
255790=^1752 cu.ft. = voluae of concrete needed to
150
hold leg in ground.
comfiressian _ , ~^
.Maximum oompariaon due to dead and wind load - 1,224,176
in tower section of leg.
The soft bearing lo-d for loam is about 2 tons per sq.ft.
1,224176_ = 307 sa.ft.
40~00
Use a hexagonal concrete ring of trapizoidal cross sec-
tion. Width of lower base 11' and upper base 5ft. and 7 'high.
This will give a foundation of sufficient weight to be
stable and with sufficient bearing area.
The anchor rods pass through the concrete and are bolted
in a plate 4'x4"x7/8" at bottoin.
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A shoe is placed on top the concrete into v/hich the
anchor bolts are fastened.
SPECIFICATION
for
WATER WORKS, TANK and T0\7ER for
PRAHKLIM, Iiro.
TAIK SPECIFICATIONS (general)
The metal composing the tank shall be soft, open=hearth
steel, containing not mdre than 0.06 per cent phosphorus, and
having an ultimate strength of not less than 54,000, nor more
than 62,00 pounds per square inch, an elastic limit of not lesf
than which shall be silky in character. Before or after being
heated to a cherry red and quenched in water at 80 F. the
steel shall admit of bending while cold, flat upon
itself, without sign of rupture on the outside of the bent
portion.
All test samples shall be cut from finished material.
/6
TENSILE TEST
P/£CE
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3£NDJ^JG- TEST
P/£0£
W/DThi = -^"iTH/C/rNE SS
Tensile test pieces to be at least i6 inches Icng, and to have
for a length of eight (a) inches an uniform planed-edre, sect-
ional area of at least one-half (1/2) square inch, the width
in no case to be less than the thickness of the piece. Bending
test pieces are to be twelve (12) inches long, and to have a
width of not less than four times the thickness, with edges
filed smooth. If required by the Engineer, the contractor will
provide four (4) certified samples of each thickness of plate
used in work, these samples to be (2) tv/o inches wide and six-
teen (16) inches long.
For the purpose of identification the number of the melt
or heat of steel shall be stamped on each plate produced there
from. At least one full set of tests, both chemical and
physical, as above specified, shall be made of each melt, and
such additional tests may be made as, in the judgement of the
inspector, seem essential for corroborative purposes under vary^
ing conditionsor methods of treatment of the metal, All
plates must be free from laminations and surface defects, and
shall be rolled truly to the specified thicknesses. Com-
plete facilities for the tests and inspections shall be pro-
vided by the contractor, as required. Llaterial may be in-
spected at the mill by such party as may be approved by the
Water Works CoDomittee of the city of Franklin, Indiana,
The plates and angles shall be shaped to the proper curv-
ature by cold rolliag. ITo heating and hammering shall be
allowed for straightening or curving, and no scarfing shall be
done at a temperature below that of ignition of a hard-wood
hammer handle, and no v/ork shall be done upon the steel be-
ii^-rt -8s.
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55.
tv/een such temperature and that of "boiling v/ater.
The work shall be carefully and accurately laid out in
the shop, and the rivet holes punched with a center punch,
sharp and in perfect order, from the surface to he in contact.
The diaineter of the punch shall not exceed that of the rivet
by more than one sixteenth (1/I6) inch, and the dianeter of
the die shall in no case exceed that of the punch by more than
one sixteenth (I/I6) inch. Rivet holes in plates having a
thickness of three-fourths (3/4) inch and over, shall either
be drilled, or if punched, shall be reamed not less than one-
eighth (l/s) inch larger than the die sides of the holes and
sharp edges shall be trimmed.
All calking edges shall be planed to a proper bevel.
All parts must be adjusted to a perfect fit, and properly
marked before leaving the shop.
In assembling the work, the rivet holes shall match so
that hot rivets may be inserted without the use of a hammer.
The use of the drift pin will not be permitted. Eccentric
holes, if any, must be reamed, and if required, larger-sized
rivets shall be used in such holes.
The best grade of soft charcoal iron rivets to be had in
the market, shall be used. Sufficient stock must be provided
in the rivets, to co.npletely fill the holes and make a full
head. The rivets shall be driven at such a heat as will ad-
mit of their being finished in good form with a button set, be-
fore the rivet has cooled to a critical point. As often as
may be deemed advisable for the purpose of testing the work
rivets shall be cut out at the direction of the inspector.
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56.
The quality of tlie rivet metal and of the workmanship shall
be such that the fracture of the rivet so removed at random
shall show a good tough, fibrous structure, v/ithout any crys-
talline appearance, and there shall be no evidence of brittle-
ness. Loose rivets must be promptly replaced, no rivet calk-
ing being permitted.
All seams must be calked thoroughly tight with a round-
nosed calking tool, by workmen of acceptable skill. Great
care must be taken not to injure the under plate.
All workmanship must be first class in eYerj particular.
Defective material and workma,nship may be rejected at any
stage of the work, and must be properly replaced by the con-
tractor as directed.
Estimating the courses from the top of the tank down-
wards, the upper course shall be of one-quarter (l/4) inch
steel: the second course shall be of one-quarter (l/4) inch
steel; the third course shall be of one-quarter (lA) inch
steel; the fourth course shall be of five-sixteenths (s/is)
inch steel; the fifth course shall be of three -eighths (s/s)
inch steel; the sixth course shall be of seven-sixteenths
(7/I6) inch steel; the seventh course shall be of one-half
(1/2) inch steel; the eighth course shall be of nine -six-
teenths (9/I6) inch steel; the ninth course shall be of five-
eighths (5/8) inch steel; the tenth course shall be of eleven-
sixteenths (II/I6) inch steel; the eleventh course shall be
of three -fourths (3/4) inch steel; the last course shall be
of thirteen-sixteenths (13/l6) inch steel.
The size and spacing of the rivets for each course
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37.
is given as follov/s:
The upper course; vertical joint 5/8 *,' rivets 2 5/3"c. c.
2 l/s " between pitch lines, 1 l/s " to edge of plates; hor-
izontal joint 5/8 " rivets 2" 6. C. 1" to edge of plate.
Second course; vertical joint 5/3" rivets 2 5/3" c. c.
2 l/s" between pitch lines, 1 l/S" to edge of plate; horizontal
joint 5/8" rivet 2" c. c. , 1" to edge of plates.
Third course; vertical joint, d/S" rivets 2 5/3 c. c.
2 l/S" "between pitch lines, 1 l/S" to edge of plate, horizontal
joint 5/8" rivets 2" c. c, 1" to edge of plate.
fourth course; vertical joint, 5/8" riverts, 2 5/3" c. c.
2 1/3" "between lines, 1 l/3" to edge of plates; horizontal
joint, 5/8" rivets, 2" c. c, 1" to edge of plate,
Pifth course; vertical joint 3/4" rivets 2 s/S" c. c.
2 1/8" between pitch lines, 1 l/4 to edge of plates, horizontal
joint 3/4" rivets 2 l/4 c. c. 1 l/4 to edge of plates.
Sixth course; vertical joint 3/4" rivets 2 3/4" c. c.
2 l/4» between pitch lines, 1 3/8" to edge of plate; hori-
zontal joint 7/8" rivets 2 5/8" c. c. 1 1/2" to edge of plate.
Seventh course; vertical joint 7/3" rivets, 2 7/3" c, c.
2 3/8" between pitch lines, 1 5/8 to edge of plate; horizontal
joint 1" rivets, 3" c. c, 1 3/4" to edge of plate.
Eight course; vertical joint 7/8" rivets, 2 7/8" c. c.
2 3/8 between pitch lines, 1 5/8" to edge of plates, horizontal
joint 1" rivets 3" c. c. 1 3/4" to edge of plats.
Ninth course; vertical joint, 7/3" rivets 2 7/3" c. c,
2 3/8" between pitch lines, ^ ^/s" to edge of plate; hori-
zontal joint; 1" rivets 3" c. c, 1 3/4" to edge of plate.
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38.
Tenth course; vertical joint, 1" rivets 2 7/8" c. c,
2 3/8" between pitch lines, 1 3/4" to edge of/plate; horizontal
joint 1" rivets 3" c. c, 1 3/4" to edge of plate.
Eleventh course; vertical joint 1" rivets 3"c. c. 2 l/2"
between pitch lines 1 7/8" to edge of plate; horizontal joint
1" rivets 3" c. c. 1 3/4" to edge of plate.
Twelfth course; vertical joint 1" rivets 3" c. c. 2 1/2"
between pitch lines, 1 7/3" to edge of plate; horizontal joint,
1" rivets 3" c. c, 1 3/4" to edge of plate.
After coHpletion the tank shall be tested bj'- filling with
water, and the leaks, if any shall be promptly and thoroughly
calked. The tank must be thoroughly watertight before accept-
ance.
All inspections shall be made under the direction of the
Engineer, or his authorized assistant, and he shall have gen-
eral supervision of the work.
TARE.
Detailed Specifications.
There will be required one steel tank, forty (40 ) feet
in internal diameter and sixty (6O) feet high; constructed in
accordance with this and the general specifications and plans
on file in the office of the Water Works Coxirnittee, marked
"Elevation and Details of Tank".
The tank shall consist of twelve rings or courses, and shall
measure exclusive of seam or lap joinl^ five (5) feet to each
course; and each course shall not contain more than six (6)
plates.
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59.
The thickness of plates will be determined "by a micrometer
caliper; all plates "under gauge" will "be rejected.
The lap for double riveted joints shall be six (6) diam-
eters of rivet in v/idth. the laps for single riveted joints
shall be three (3) diameters of the rivet in width.
The vertical seams of all courses shall be double riveted*
All roundabout seams shall be single riveted.
All seams in the circular course shall be lapped and the
rivets driven hot and finished with a hand set. The vertical
searas in each course of the tank, to break joint equi-distant
from the vertical seams in the course next below. All rivets
under angle irons shall have counter-sunk machine heads, fin-
ished flush and with the conical hand driven heads.
The edges of all plates shall all be carefully trimmed
to a short bevel, and be calked with a short blunt tool;
and all joints shall be made water-tight, under natural head
or pressure of water in the tank, and without putty, lead or
gaskets of any kind.
At the top of the tank and flush with its upper edge,
there shall be riveted an angle iron ring, 8" X 8" X v/S" insect -
ion. This ring will be riveted to the tank by means of three-
fourths inch rivets, spaced 2 l/2" c. c.
A balcony shall be provided around the tank, attached to
tank by means of brackets. All details of balcony, brackets,
railing etc., shall conform to the "Plans of Tank",
There shall be provided two ladders, on the outside of
tank from the balconj^ to trap door in roof, and the other reach««k
ing from the roof to the bottom of the tank, on the inside.
All details of ladders inclvdins attachment to tan>, shall
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40^
conform to the details as shown on the plans.
The tank will be coversd with a roof composed of a single
thickness of boards cut segmentally and supported as shown on
the plans.
The roof to be covered with l/4" steel plates in three
courses, each course lapping as shown on the plans, A trap door
shall be provided in roof, permitting access to the interior
of the tajik.
All details shall conform to the "Plans and Specifications'
There will be required as shPwn in the dra-wings above re-
ferred to a circular hole Bixteen(16) inches in diameter, to re*
ceive the sixteen (16) inch cast iron influent pipe as per de-
tail.
In the erection of the tank, the upper and lower rivet
holes in the vertical ^mtd-cu^ seatais, shall be first "stiched"
with bolts, and such holes as do not come fair, shall be reamed
until the rivet will pass through, and the head seat square
on the plate, and where the reaming will inlarge the holes more
than one-sixteenth (l/lo) inch, the hole shall be reamed to
take the next commercial size of rivet.
In erecting the tank the rings or courses shall be be
kept concentric to a "plumb" line, suspended from the inside
staging truly over the center of the tank bottom, and any
rings which under this condition come out of "plumb" or which
may not be concentric to the ring next below, or to the "plumb"
line, shall be rejected.
The joints in the angle iron rings, shall be made with
covers or fish plates, lapping the end of angle irons, fourteen
and one-half (14 1/2) inches. The fish plate of tr lower
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41.
interior angle-iron ring (one each, joint) shall "be of four and
one-half (4 l/s ) by five eights iron. The angle-iron rings shall
be made up with not more than (4) joints each.
The hemi -spherical bottom shall be constructed of steel
plates 5" X 5" X 7/l6", which shall be bent to the curvature
while cold.
General
Proposals will be accompanied by a plan , dimensions,
sizes of members, thickness of materials, etc.
/ll metal in the structure, except rods, which require
welding or forging, will be steel. All steel comprising the
principal parts of main posts must be made by the Open Hearth
Process. All other steel may be made by either the Open Hearth
or Bessemer Process.
Ail tests and inspection of material shall be made at
the place of manufacture prior to shipment.
Specimens for determining the tensile strength, limit of
elasticity and ductility, shall be determined from a standard
test piece cut from the finished material.
Rivet steel shall show an ultimate strength of from
48,000 to 58,000 pounds per square inch. Elastic limit, not
less than l/2 the ultimate strength. Elongation (1,400,000/
ultimate) strength.
Bending test, 180 degrees flat upon itself without fract-
ure on the outside of bent portion.
Structural steel, the same as above, except ultimate
strength, 55,000 to 65,000 pounds.
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42.
In steel made by the acid procesG, the phosphorus limit
shall "be 0.08 per cent; made "by the basic process, 0.04 per
cent.
Iran
Wrought*^used in making rods shall be first class refined
iron, Icnown as best bridge iron. The surface must be free from
blisters, cinder spots or other injurious defects. Must be made
welded together, without seams or ragged cr torn edges.
Broken fragment shall show a good fibre, clear and clean,
free from cinder spots and other foreign material.
LOADING .
The structure shall be proportioned for the following
loads:
1. The weight of the structure.
2. The weight of the water in the tank.
3. A wind pressure of 50 pounds per square foot over
1/2 of diametrical plane of tank, a.nd a uniform load of400
pounds per each vertical foot of tower. The wind forces will
be assumed acting in anj' direction, a.nd members must be proport
ioned for that direction which will give a me-ximum stress.
mriT STHIISSES for 7RQPpBTl0FIWG_ ggEg5,»_
Compression.
Members in compression shall be designed by the following
formula.
P -12,500 - 40 l/r
P - Allowed stress per squa,re inch.
1 Length between support in inches.
r Least radius of gyration in inches.
Fo mainpost to exceed 125 radii of gyration in length.
No other strut to exceed 150 radii of gyration or such
length that the fibre stress due to the bending from its own
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45,
weight exceeds 4,000 pounds per square inch.
TEJFSIOX.
10,000 pounds per square Inch net section in Plates.
18,000 II n H « n II .. Bracing.
SHEAR.
7,220 pounds per square inch.
Bearing .
15,000 pounds per square inch on rivets,
20,000 M H M n » pins,
400 n n n n « stone caps.
600 " w n It M concrete.
Por wind stresses the above unit stresses may he increased hy
25 per cent.
DETAILS of CONSTRUCTIOIT .
Anchor bolts shall alv/ays be provided. In cases where the
wind force ( the tank being empty) produces unstable equili-
brium, they must be of such strength as to prevent over-turning,
Conipression members shall be of the open type, no closed
section being used.
Bearing plates for distributing pressure over the found-
ations must be attached in such a waj' as to evenly distribute
the load throughout the entire area,
A-11 .joints to be made in main post above, and as near
practical to a horizontal strut. Splices are to be made with
plates on all sides of the columns with sufficient rivets or
bolts to throughly hold the parts together. Batten plates at
end of con5)ression members shall not have a less length than
the distance between rivet lines connecting them to channels.
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44.
The pitcii of rivets in then shall not exceed four diameters
of the rivet used.
The distance "between connections of lattice or lacing
bars to the flange of a channel shall not exceed two times the
depth of the member, nor shall they be inclined to the axis
of the same less than 45 degrees. The thickness of the lacing
bars shall not be less than 1/6O of this distance. Lattice bars
shall be riveted at their intersections. The width of the lat-
tice and lacing bars shall not be less than 2 1/2 times the
diameter of the rivet used.
The size of the rivet for various members: 7/8" throughout-
In angles and other shapes the diameter of the rivet will
generally not be less than l/4 of the leg of the angle used
in the flanges. However, no greater rivet than 1" will be used.
In work that does not have to calked the pitch of rivets
shall never exceed 6 inches or 16 times the thickness of the
thinnest outside plate, nor be less than 3 diajmeters of the
rivet.
In work that requires calking the maximum pitch shall
never exceed 10 times the thickness of the thinnest plate used,
and shall not be less than three diameters of the rivet.
The distance between the edge of an;^' piece and the center
of rivet hole must never be less than 1 3/4 times the diauoieter
of the rivet, except for bars less than 3 I/2 times the diam-
eter of the rivet in width.
A curved girder must connect the main posts to each other
where the posts connect to the tank. This girder shall be con-
nected to the tank by means of rivets pitched not greater than
four diameters, and shall be of sufficient strength to stand
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45.
the thrust and bending moments induced hy the horizontal com-
ponent of the stress in the posts, and shall he rigidly connect-
ed to the posts. Its outer flange shall he stiff enough to
prevent sagging, or must he supported at intervals "by means of
braces to the tank.
All rods shall be provided with some adjustment for length.
Where they are threaded the ends shall be upset to make up
for the decreased area, or else the rod shall be of enough
greater size throughout its entire length to a.llow for thi5 de-
duction.
At proper intervals horizontal rods from the main posts
shall run out and connect to the inlet pipe to hold the same
securely inposition.
The inlet pipe must be so provided as to allow for changes
of height of tower.
WOBKI.IAJTSHIP .
All workmanship shall be of first-class. All abutting
surfaces of compression members must be planed or turned to
even the bearings so that they shall be in such contact through-
out as may be obtained by such means. At the joint between the
bearing plate and pieces directly above, the plate need not
be planed. It, however, must be carefully straightened.
The diameter of the punch shall not exceed by more than
1/I6 of an inch the diameter of the rivet used. All holes
must be clean cut, without torn or ragged edges.
Rivet holes must be accurately spaced. The use of drift
pins will only be allowed for bringing the several parts to-
gether, and they must not be driven with such force as to dis-
turb the metal about the holes.
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The rivets must completely' fill th.e holes, having full
heads concentric v/ith the rivet.,, of a height not less than
6/10 the diameter of the rivet, and sliall be in full contact
with the surface or "be countersunk when so required, and ms^chine
driven wherever practicable,
Euilt members must, when finished, be true and free from
twists, kinks, and open joints betvreen component pieces.
The diameter of the hole shall be not greater than that of
the pin by more than l/32 of an inch.
All pins must be smooth and truly circular. Pilot nuts
must be provided where necessary, to preserve the threads
while pins are being driven. Fillers must be used v/herever
necessary to fill vacant spaces on pins or bolts.
Detail pieces, if necessary.' may be bent hot without an-
nealing. If a steel piece im Which the full strength is
required has been partially heated, the whole must be sub-
sequently annealed,
LADDEB.
A latticed post m^ serve as a ladder' from the ground
to a point 6 feet belov; the balcony. From this point a lad-
der will extend to the balcony and from there to the top of
the tank, being firmly secured thereto. When latticed posts
are not used, ladder will extend to about 8 feet above ground,
PAINTING .
Ml v;ork shall be covered before leaving the shop with
one coat of graphite paint thoroughly mixed with pure boiled
linseed oil, and a sma,ll amount of Japan dryer, except the
contiguous surfaces of the plattes forming the tank. This
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47.
portion shall not be painted. All other parts inaccessible
after assembling must be v/ell painted before assembling.
After the v/ork has been erected, the v/hole shall be
painted with one coat of same, and all parts not acceissible
for painting after erection shall be painted before.
IKLET PIPE
The inlet pipe will generally be built of standard cact
iron pipe, AIJD WILL EE FURNISHED TO THE BUILDERS OP TEE TOWER,
UNLESS OTHERWISE ARRAITGED. The builders of the tower, how-
ever, to erect this pipe and connect same to tank.
ERECTION.
The builder of the water tower will erect the work, will
put in place the inlet pipe, will build the roof and complete
the work in all particulars, unless othervase specified.
He will a.ssume the responsibility such as is usually
incurred by builders of such work, and at all times have a
competent man in charge.
Rubbish and other unsightly material, caused by his oper-
ations, will be removed or disposed of upon completion of the
work.
In cases where the foundations 3,re to be built by par-
ties other than the builders of the v/ater tower, the latter
will furnish anchor bolts, and sketch for setting the same,
to the former, who will set these bolts in the foundations
as they are built, locating them exaotly as shown on the sketch.
POUI^ATIOITS
The foundations shall be concrete, built according to
foundation plans furnished by the builder of the tower.
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Excavation shall he carried v;ell 'below the frost line, to
a firm footing — deeper than shown on plans if necessary,
to secure this result, but at an increased cost, to be agreed
upon.
Wooden forms to bring the foundations to the shape indi-
cated on the drawings shall be built for receiving the con-
crete, which shs-ll be mixed and placed as follovifs:
Concrete shall be made of one part Portland cercent , three
parts sand and five parts broken stone and gravel. The mixing
of this concrete to be done by hand on platforms. The cement
and sand shall first be thoroughly nixed dry by turning over
and over until it is of uniform color. After this is done,
the stone or gravel, thorouglily moistened, shall be added.
The whole will then be thoroughly mixed by turning over with
shovels, sufficient water being added to make the whole mass
a tenacious and quaking mixture. The concrete so mixed
shall be immediately deposited in the foundations in layers
not exceeding six inches thick, each leaver to be thoroughly
and compactly tamped until the v/hole mass is perfectly solid,
and free mortar appears on the surfa,ce. No concrete shall be
put in the foundations which from any cause has been allowed
to set or partially set.
NOTE: — Concrete caps shall be mixed one part Portland
cement, tv/o parts sand, three parts broken stone, and shall be
smoothly finished.
The anchor bolts shall be firmly held in place so that
they will not be moved while depositing the concrete.
In the concrete specified as above the cer-ent used shall
be one of the best brands of Portland* Its weight per cubic
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49.
foot shall not be less than one hundred pounds. After an
exposure of one day in air and six days in v;ater it shall
develop a tensile strength of not less than four hundred
pounds per square inch. It shall be in prime condition.
The sand shall be course, sharp and clean, free from clay
or loam.
The broken stone or gravel shall not be larger than two
inches in any direction, and shall be entirely free from dirt
and other foreign substances.
If the location of the work is such that considerable
econoiay can be obtained by the use of either rubble masonry
or hard burned brick instead of concrete, as specified above,
special arrangements and specifications will be made for the
use of such material.
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q628.1
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Dlttmar, A. A.
Design of a water works p.mc,.;,^
system cc eievatea steel "tanE
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20772
055'
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